Synonymous Polymorphisms in HOXB13 as a Protective Factor for Prostate Cancer.

Area of Science:

• Genetics
• Oncology
• Molecular Biology

Background:

• Genomic studies implicate the HOXB13 gene and single nucleotide polymorphisms (SNPs) in prostate cancer (PCa) development.
• The G84E polymorphism in HOXB13 is linked to more aggressive PCa with earlier onset.
• This study investigated HOXB13 SNPs in PCa and benign prostatic hyperplasia (BPH) patients.

Purpose of the Study:

• To determine the frequency of the HOXB13 G84E mutation and other recurrent HOXB13 SNPs in patients with PCa and BPH.
• To analyze the association between specific HOXB13 SNPs and the risk of developing PCa.

Main Methods:

• Reverse transcriptase-polymerase chain reaction (RT-PCR) was used to analyze exons 1 and 2 of the HOXB13 gene.
• Bidirectional Sanger Sequencing was performed on peripheral blood samples from 232 PCa and 110 BPH patients.
• Statistical analysis was employed to correlate recurrent SNPs with PCa.

Main Results:

• The G84E mutation was found at a low frequency (0.9%) in both PCa and BPH groups.
• Two synonymous SNPs, rs8556 and rs9900627, were detected in both patient cohorts.
• Individuals with both rs8556 and rs9900627, or homozygous for either, were 2.9 times less likely to develop PCa (p=0.05).

Conclusions:

• The study suggests a significant negative correlation between HOXB13 SNPs rs8556 and rs9900627, and the presence of PCa.
• These findings indicate a potential protective role for these specific SNPs against PCa.
• Further research with larger cohorts is recommended to confirm these results.